HELP HELP HELP HELP IM GONNA FAIL SSCHOOL IF I DONT GET THIS IN
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Find the circled angle, please explain

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What is the value of x in the diagram below?

Melissa is purchasing a $160,000 home and her bank is offering her a 30-year mortgage at a 4.9% interest rate. in order to lower her monthly payment, melissa will make a 20% down payment and will purchase 3 points. what will her monthly mortgage payment be? a. $645.98 b. $650.46 c. $662.93 d. $606.69

Graph each quadratic function and identify its key characteristics. f(x) = x^2 - 2x - 3